LS
Leonard Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pike-County, Illinois
Our Model Tree links this Leonard Smith across the 1920, 1930 and 1940 US Censuses in Pike-County, Illinois (XGBoost, ~Confirmed), with identified parents Della & Pearl — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pike-County, Illinois |
| Surname | Smith |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Detroit Twp. |
| 1935 Residence (County) | Pike |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Truck Service |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Truck Driver |
| Township / Ward | Detroit Twp |
| Est. Birth Year | ~1917 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leonard | Age | Birth yr |
|---|---|---|---|---|
| Curtis Smith | Head | — | 45 | ~1895 |
| Joe Smith | Son | — | 11 | ~1929 |
| Leonard Smith | Son | — | 23 | ~1917 |
| Della Smith | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Pike, Illinois
Son, age 3
Pike, Illinois · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Pike, Illinois
Son, age 14
Pike, Illinois · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Pike-County, Illinois
Son, age 23
Pike-County, Illinois · implied b. ~1917 — 4 household members
| Surname | Smith |
| Given Name | Leonard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Detroit Twp. |
| 1935 Residence (County) | Pike |
| Occupation | Truck Driver |
| Industry | Truck Service |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Leonard Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Della Smith (~0.92 confidence) and father Pearl Smith (~0.92 confidence) and mother Nettie Smith (~0.92 confidence) and father Pearl Smith (~0.92 confidence) and father Curtis Smith (~0.92 confidence) and mother Nettie Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Della Smith
b. ~1892
Source mother
● Household
· direct · ~0.92
Father
Pearl Smith
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Nettie Smith
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Pearl Smith
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Curtis Smith
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Nettie Smith
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leonard Smith
Son · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Joe Smith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Pike-County, Illinois
Open full size
1940 US Federal Census — Pike-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00868-00171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Bissell | 9 | Son | — | Illinois |
| 42 | Everett Bissell | 7 | Son | — | Illinois |
| 43 | Ronald Bissell | 2 | Son | — | Illinois |
| 44 | Otis Dennison | 53 | Head | Farmer | Illinois |
| 45 | Virgie Dennison | 54 | Wife | — | Illinois |
| 46 | H. Dale Dennison | 21 | Son | Farmer | Illinois |
| 47 | Melvin Dennison | 23 | Son | Farmer | Illinois |
| 48 | Norma Dennison | 17 | Daughter | New Worker | Illinois |
| 49 | Guy Norton | 63 | Head | Farmer | Illinois |
| 50 | Abbie Norton | 52 | Wife | — | Illinois |
| 51 | Leroy Norton | 33 | Son | Farmer | Illinois |
| 52 | Lindell Norton | 32 | Son | Farmer | Illinois |
| 53 | Laura Barkley | 77 | Mother in l | — | Illinois |
| 54 | Curtis Smith | 45 | Head | Farmer | Illinois |
| 55 | Della M. Smith | 48 | Wife | — | Illinois |
| 56 | Leonard Smith THIS PERSON | 23 | Son | Truck Driver | Illinois |
| 57 | Joe Lee Smith | 11 | Son | — | Illinois |
| 58 | P. R. Hamnerstrom | 67 | Head | Farmer | Illinois |
| 59 | Annie Hamnerstrom | 64 | Wife | — | Illinois |
| 60 | Howard Stauffer | 31 | Hired help | Farm Laborer | Illinois |
| 61 | Rubie O. Ruble | 45 | Head | Farm Laborer | Illinois |
| 62 | Pauline Ruble | 32 | Wife | — | Illinois |
| 63 | Donald Dale Ruble | 3 | Son | — | Illinois |
| 64 | Raymond Reel | 41 | Head | Farmer | Illinois |
| 65 | Edna Reel | 37 | Wife | — | Illinois |
| 66 | Donald Reel | 17 | Son | — | Illinois |
| 67 | Gerald Reel | 14 | Son | — | Illinois |
| 68 | Norman Reel | 7 | Son | — | Illinois |
| 69 | James Phillips | 49 | Head | Farmer | Kansas |
| 70 | Sarah Phillips | 48 | Wife | — | Illinois |
| 71 | Helen Phillips | 27 | Daughter | Helper | Illinois |
| 72 | Eva Phillips | 23 | Daughter | Teacher | Illinois |
| 73 | Fred Phillips | 19 | Son | Np | Illinois |
| 74 | Joe Phillips | 17 | Son | Np | Illinois |
| 75 | Ada Phillips | 15 | Daughter | — | Illinois |
| 76 | Betty Phillips | 13 | Daughter | — | Illinois |
| 77 | Hazel Phillips | 10 | Daughter | — | Illinois |
| 78 | John Phillips | 8 | Son | — | Illinois |
| 79 | Geo. D. Sherman | 34 | Head | Farmer | Illinois |
| 80 | Marie Sherman | 23 | Wife | — | Illinois |
Pedigree Summary
Leonard + 1 sibling
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)